List of top Questions asked in AP EAPCET

The metal purified by Mond pross is X and metal purified by van Arkel method is Y. X and Y respectively are:
5.0 mL of [AgI] / Ag$^+$ sol is coagulated by the addition of 15 mL of 0.001 M potassium iodide solution. The flocculation value of potassium iodide is
x g of methane was burnt completely in the presence of oxygen. The liberated gases were passed into a solution containing 370 g of Ca(OH)$_2$. The weight of white precipitate obtained was 500 g. What is the value of x (in g)? (Given : C = 12; H = 1; Ca = 40; O = 16 u)
If the standard enthalpy change (\(\Delta H^o\)) for reaction \[ \text{H}_2(g) + \text{Br}_2(l) \rightarrow 2 \text{HBr}(g) \] is \(-72.8 \, \text{kJ}\), the standard enthalpy of formation (\(\Delta H_f^o\)) of \(\text{HBr}(g)\) in \(\text{kJ mol}^{-1}\) is:
Jones reagent is used in which of the following conversions?
The correct order of atomic radii of B, Be, N and C is
Identify the macromolecular colloids from the list given below:
I. Synthetic rubber II. Rhombic sulphur III. Sodium stearate
IV. Cellulose V. Enzymes VI. Sodium lauryl sulphate
Low levels of which of the following chemical substances cause depression?
The metal having low melting point is
One mole of \( PCl_5(g) \) was heated in a 1L closed flask at 500 K. At equilibrium, 0.1 mole of \( Cl_2(g) \) was formed. What is its \( K_p \) (in atm)? (Given R = 0.082 L atm mol\(^{-1} \) K\(^{-1} \))
One mole H\textsubscript{2O(g) and one mole CO(g) are taken in 1L flask and heated to 725K. At equilibrium, 40\% (by mass) of water reacted with CO(g) as follows:} \[ \text{H}_2\text{O(g)} + \text{CO(g)} \rightleftharpoons \text{H}_2\text{(g)} + \text{CO}_2\text{(g)} \] Its $K_c$ value is
Identify the correctly matched pairs.
  1. \(\mathrm{TiO_2}\) – Pigment industry
  2. \(\mathrm{MnO_2}\) – Dry battery cells
  3. \(\mathrm{Cu/Ni}\) alloy – UK 'copper' coins
Which of the following alloys are correctly matched with their uses? \[ \text{i) Li/Mg} \quad \text{armour plates} \] \[ \text{ii) Cu/Be} \quad \text{high strength springs} \] \[ \text{iii) Mg/Al} \quad \text{aircraft construction} \]
The structure of Gly-Ala (Glycylalanine) is:
The device that can detect optical signals is
The amplitude of a wave, represented by displacement equation \( y = \frac{1}{\sqrt{a}} \sin \omega t \pm \frac{1}{\sqrt{b}} \cos \omega t \) will be
If $\Delta Q$ is the heat supplied and $\Delta W$ is the work done by the gas at constant pressure, then the ratio $\dfrac{\Delta Q}{\Delta W}$ is ($\gamma$ = specific heat ratio)
The resultant magnitude of two vectors of same magnitude is equal to magnitude of either. The angle between the two vectors is
The equation of a stationary wave is \( y = 20 \sin(\pi x) \cos(\omega t) \), where \( x, y \) are in metre and \( t \) is in second. The distance between a node and its adjacent antinode is:
A ball of mass 50 g moving with a velocity of 10 ms$^{-1}$ is hit by a bat and the ball retraces back with a velocity of 20 ms$^{-1}$. Then the impulse on the ball is
The critical angle for diamond with respect to air is nearly
A body 'A' of mass $ m_1 $ moving with a velocity of 6 m/s collides with another body 'B' of mass $ m_2 $ which is at rest. After collision if 'A' moves with 2 m/s and 'B' moves with 3 m/s in the initial direction of A, then the ratio of $ \frac{m_1}{m_2} $ is
In a transistor connected in CE configuration, the emitter current increases from 10 mA to 20 mA when the base current increases from 0.12 mA to 0.24 mA. Then the current gain is
The minimum excitation energy of an electron revolving in the first orbit of hydrogen is:
An inductor is connected to an ac source of frequency 50 Hz. The frequency of the instantaneous power developed in the circuit is